<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
    </head>

    <body>
        <p style="position: absolute; z-index: 1;">
            <input type="checkbox" id="btn" />横纵比为1
        </p>

        <div
            id="myDiv"
            style="
                width: -webkit-fill-available;
                height: -webkit-fill-available;
                position: absolute;
            "
        >
            <div style="padding: 3%;">
                <h1>Please use [ctrl + v]</h1>
                <p>+ [0] {x=0 y=0 } Vector2</p>
                <p>+ [1] {x=1 y=1 } Vector2</p>
                <a href="help.html" target="blank">使用方法</a>
            </div>
        </div>
        <script src="js/main.js"></script>
    </body>
</html>
